Transferring gray water to the black tank via a 'Little Giant' pump and the black tank flush fitting

The scenario - you are boondocking or on an electric only site and the gray water tank fills up fast - about three to five times faster than the black tank! Yes - that's the way it works! My black tank is 62 gallons, my gray comes in at 55 gallons. I have gone back and forth within my little brain about what the optimum ratio of gray to black storage would be in the perfect RV. Sometimes I think the black should be 1/2 the capacity of the gray. Sometimes I think having a large black tank is good also.

Here are two situations:

1 - You are camped in a national forest, state campground, national park, etc. that forbids dumping gray water at your site and you don't have a sewer hookup at your site (of course) and you don't want to move to dump your tanks because you would have to take down your chili pepper awning lights, pull up the flamingoes blocking the way, take down the flag pole, etc. The solution is to transfer gray water to the black tank. With good water management, you should be able to go for two weeks without moving the rig and dumping/loading water.

2- You are boondocking with no restrictions about dumping gray water . This is a good case for having a large black tank - there is no way I would dump black water at my site! I have no problem dumping gray - in fact when we were living on the coach while it was parked in front of our new-to-us house on our little ranch, the gray valve was open while we lived on the coach for about a month. The little grove of Live Oaks that were the beneficiaries of the water were quite happy and the environment hasn't suffered one tiny bit.

The project:

Bill of materials -

• Valterra drain to garden hose adapter
• 'Little Giant' utility pump with garden hose fittings
• Hose as required (you determine the ID, length, and type)
• Hose fittings as required

How to:

Make it look something like the pictures below! Happy pumping!

Go home!